* Solderness Breadboard of size 3.5” x 2.5” is also mounted on substantial Hylem backing palte. ® Spare plastic coated single Tinned copper wires(SWG No : 22} are provided for easy connections. ® Digital meter with selector switch to read V, V & output 1 2 voltage (V ) Principle Operational Amplifier are high gain differential amplifiers and are known so because they are used to perform a number of operations e.g. summing, Inverting, non-inverting etc. Such amplifiers are available in the form of an integrated circuit-IC 741.